CVE-2026-83856(microsoft / windows_11_23h2)

LOWCVSS 8.1 · HIGH

Immediate actions

Recommended action window: Monitor and triage in normal cycle

NVD description

Out-of-bounds read in Windows Event Logging Service allows an unauthorized attacker to execute code over a network.

0.5/ 10 priority

Patch / fix

Weakness type (CWE)

CWE-125

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

If you run products in this scope, you should treat this CVE as relevant to your environment.

Vendors

Products

windows_11_23h2windows_11_24h2windows_11_25h2windows_11_26h1windows_11_26h2windows_server_2022windows_server_2025

Full discourse1 post

VulniPulse@vulnipulse14h
CVE advisory: CVE-2026-83856 - microsoft: Windows Event Logging Service Remote Code Execution Vulnerability. https://vulnipulse.com/advisories/microsoft-cve-2026-83856 #CVE #CyberSecurity #Microsoft #WindowsServer
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CPE platform detail12 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

12 of 12 entries

Part	Vendor	Product	Version	Target SW	Target HW
OS	microsoft	windows_11_23h2	-	-	arm64
OS	microsoft	windows_11_23h2	-	-	x64
OS	microsoft	windows_11_24h2	-	-	arm64
OS	microsoft	windows_11_24h2	-	-	x64
OS	microsoft	windows_11_25h2	-	-	arm64
OS	microsoft	windows_11_25h2	-	-	x64
OS	microsoft	windows_11_26h1	-	-	arm64
OS	microsoft	windows_11_26h1	-	-	x64
OS	microsoft	windows_11_26h2	-	-	arm64
OS	microsoft	windows_11_26h2	-	-	x64
OS	microsoft	windows_server_2022	-	-	-
OS	microsoft	windows_server_2025	-	-	x64